CVE-2026-116585

UNKNOWN 0.0

Go JOSE: Panic during CBC-HMAC processing

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.5, decrypting untrusted JWE ciphertext with A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 can pass an empty ciphertext buffer to CBC-HMAC unpadding. Insufficient validation allows the empty buffer to be indexed, causing a panic and denial of service. Applications that decrypt attacker-controlled ciphertext with one of these content-encryption algorithms are affected. This issue is fixed in version 4.1.5.

CWE	CWE-129
Vendor	go-jose
Product	go-jose
Published	Oct 26, 2026

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Affected Versions

go-jose / go-jose

< 4.1.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/go-jose/go-jose/security/advisories/GHSA-4w3g-jfj2-cw2q github.com: https://github.com/go-jose/go-jose/pull/292 github.com: https://github.com/go-jose/go-jose/commit/35883f7999e87cbd1b1f4cda07fdad8cd71c3dd6 github.com: https://github.com/go-jose/go-jose/commit/74114c2fa22669a2b2a296746eaa82e15566fd54 github.com: https://github.com/go-jose/go-jose/releases/tag/v4.1.5